ESP32 Preferences
The ESP32 Preferences library provides a simple and efficient way to store key-value pairs in the ESP32’s non-volatile storage (NVS), making it ideal for saving small amounts of…
1 Min Read
Read Value
The following example creates a BLE server with a single service and characteristic. The characteristic can be read by a connected BLE client. Steps: Code: Explanation: How to…
2 Min Read
Using Preferences
The API for Preferences is simple and easy to use. Here’s a breakdown of the typical operations: 1. Include the Preferences Library: 2. Create a Preferences Object: 3….
1 Min Read
Write Value
This example will set up the ESP32 as a BLE server with a writable characteristic. The value written to the characteristic will be printed in the serial monitor….
1 Min Read
LittleFS
LittleFS (Little File System) is a lightweight file system designed for microcontrollers and embedded systems. It is an alternative to SPIFFS (SPI Flash File System) and is often…
1 Min Read
Upload Files to LittleFS
LittleFS is now integrated into Arduino ESP32 Core v2, making it easier to store files on the ESP32’s Flash memory. To upload files to LittleFS, follow these steps:…
1 Min Read
ESP-NOW Overview
ESP-NOW is a wireless communication protocol developed by Espressif for the ESP32 chip. It’s designed to enable low-power, direct, peer-to-peer communication between ESP32 devices, without needing a Wi-Fi…
1 Min Read
Example
This code allows multiple ESP32 devices to communicate with each other wirelessly using ESP-WIFI-MESH Setup Instructions ESP-MESH Example Code How It Works Testing
1 Min Read
I2C Address Scan
It is easy to find the I2C address of a device using an I2C Scanner code. To do this, simply connect an I2C master (such as an Arduino…